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            _____    _    _     ______            
    ___    |  ___|| | |  | ||  /_   _//     ___   
   /   ||  | ||__   | |/\| ||   -| ||-     /   || 
  | [] ||  | ||__   |  /\  ||   _| ||_    | [] || 
   \__ ||  |_____|| |_// \_||  /_____//    \__ || 
    -|_||  `-----`  `-`   `-`  `-----`      -|_|| 
     `-`                                     `-`

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Text this: Exact BER analysis of DS PPM UWB multiple access system under imperfect power control